Member Since 1994
Bill John Randel
Senior Scientist, National Center for Atmospheric Research
AGU Research
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Appreciation of Peer Reviewers for 2024
JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES
19 march 2025
Yafang Cheng, Rong Fu, Christian George, Filippo G...
The editorial board of JGR Atmospheres thanks the reviewers who refereed papers in 2024. The editors of Journal of Geophysical Research (JGR): Atmo...
The Warming of the SH Subtropical Lower Stratosphere and Implications for Detecting Antarctic Ozone Recovery
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION VI ORAL
atmospheric sciences | 13 december 2024
Aodhan J. Sweeney, Qiang Fu, Stephen Po-Chedley, S...
Temperature profiles from radio occultations (RO) provide a unique dataset for investigating trends in the upper troposphere and lower stratosphere si...
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Variations and Trends of Water Vapor Near the Extratropical Tropopause
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION VI ORAL
atmospheric sciences | 13 december 2024
Emily Tinney, William J. Randel
The extratropical upper troposphere and lower stratosphere (UTLS) is a dynamically, chemically, and radiatively complex region. Recent studies have fo...
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Hunga effects on stratospheric circulation and wave forcing
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION VI ORAL
atmospheric sciences | 13 december 2024
Xinyue Wang, William J. Randel, Wandi Yu
The Hunga volcanic eruption in January 2022 perturbed the stratosphere by injecting large amounts of water vapor and a moderate amount of SO2. Observa...
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Uncertainty in satellite observations of Hunga aerosol and water vapour
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION III POSTER
atmospheric sciences | 12 december 2024
Adam E. Bourassa, Landon A. Rieger, Doug A. Degens...
The highly explosive eruption of the Hunga Tonga-Hunga Haapai submarine volcano in Tonga on 15 January 2022 reached extremely high altitudes, with res...
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Smoke-charged vortex doubles hemispheric aerosol in the middle stratosphere and buffers ozone depletion
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION II ELIGHTNING
atmospheric sciences | 11 december 2024
Hang Su, Chaoqun Ma, Johannes Lelieveld, William J...
Australian mega-wildfires in the summer of 2019/20 injected smoke into the stratosphere, causing strong ozone depletion in the lower stratosphere. Her...
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Evolution of the early Hunga stratospheric water vapor plume observed by radio occultation
UPPER TROPOSPHERE, STRATOSPHERE, AND MESOSPHERE: CHEMISTRY, DYNAMICS, TRANSPORT, AND RADIATION II ELIGHTNING
atmospheric sciences | 11 december 2024
William J. Randel, Jon Starr, Aurelien Podglajen
We present updated observations of the stratospheric water vapor (H2O) plume from the Hunga volcanic eruption in January 2022 derived from radio occul...
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Stratospheric Transit Time Distributions Derived From Satellite Water Vapor Measurements
JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES
05 november 2024
William J. Randel, Aurelien Podglajen, Fei Wu
Stratospheric transit time distributions (age‐of‐air spectra) are estimated using time series of satellite water vapor (H2O) measuremen...